South Burlington's Champlain Water District supply is 60 mg/L hard, lake-effect humidity slows drying, and the New England pollen wave comes each spring.
South Burlington's water is the county district's soft Shelburne Bay supply at 60 mg/L, so the buildings are the variable: this is the newest and most commercial town around Burlington, with more coated glass, curtain wall and multi-tenant frontage than anywhere else in Vermont. Reach rather than pane count prices curtain wall and tall gable windows, and lake humidity slows drying. Work runs through June, August and September, with a single-story exterior at $250 to $410.
The district gives its water as 3.6 grains per gallon, about 60 mg/L — soft — meaning the coatings on this city's newer glazing matter far more than its mineral content.
| Hardness | 60 mg/L as CaCO₃ 3.6 grains per gallon, in the district's own units, as published by Champlain Water District. |
|---|---|
| pH | 7.64 (range 7.48–7.85) |
| Manganese | 0.005 mg/L (range 0.002–0.008) |
| Chloride | 19 mg/L (range 18–21) |
| Disinfectant | chloramine |
| Source and treatment | Shelburne Bay on Lake Champlain, drawn from a deep-water intake offshore; the district states the bay holds 33 billion gallons, and runs a watershed management programme for source protection · Filtration and primary disinfection at the Peter L. Jacob Water Treatment Facility, using free chlorine for inactivation, with corrosion control and disinfection by-product control maintained across the countywide service area. The facility has held Excellence in Water Treatment status for 26 years. · No softening step. |
Not in the report: alkalinity, corrosion index, iron, sodium and total dissolved solids.
SOURCE · Champlain Water District 2025 Annual Water Quality Report, Peter L. Jacob facility (champlainwater.org), with the EPA SDWIS federal treatment record, PWS VT0005092 · How we source these numbers
Airport-adjacent glass here carries combustion film that needs detergent on a set cycle rather than seasonal timing.
VERMONT SEASON BY SEASON →South Burlington drinks the same Shelburne Bay water as the rest of the county, so the water is not the variable here — the building stock is. This is the newest and most commercial of the Burlington-area municipalities, which means more coated glass, more curtain wall and more multi-tenant frontage than anywhere else in Vermont.
The supply comes from Champlain Water District's offshore Shelburne Bay intake, which sits just south of the city. Being close to the intake changes nothing chemically — it is the same treated water the whole district gets — but it does mean the city's own shoreline is part of the protected source area.
This is the county's commercial spine. The Dorset Street and Williston Road corridors carry multi-tenant retail and office frontage at a density Vermont does not otherwise have, and that supports genuine recurring contract work rather than one-off residential calls.
Burlington International Airport is inside the city limits, and airport-adjacent glazing carries a distinct soiling signature: fine combustion particulate that settles as a grey film and needs detergent rather than water alone to release.
The City Center district is new construction by Vermont standards, which means sealed insulated units with low-E coatings on most of it. Ammonia-based cleaners and acidic scale removers are the fast way to destroy those coatings and their seals, and there is more of this stock here than in any neighbouring town.
Curtain wall and large fixed lights are common in the newer commercial buildings, so the constraint is reach and water-fed pole work rather than sash handling. That is a different equipment list from the older towns a mile north.
The residential edge runs to post-2000 subdivisions with tall two-storey gable glazing. High, awkward, unopenable units are the norm, and they price by access rather than by pane count.
Sitting on the lake's eastern shelf, the city gets slower dry-down than inland Vermont and a real freeze-thaw shoulder in November and March, when meltwater off flat commercial roofs runs across storefront glass and refreezes overnight.
Because so much of the book is commercial, the seasonal shutdown bites less here than elsewhere in the state: interior and vestibule work carries through the winter on the retail corridors.
Reach decides the number in South Burlington — curtain wall and tall gable lights are quoted on access, not pane count.
There is more low-E coated and curtain-wall glazing here than anywhere else in Vermont, and the wrong chemical ruins it permanently.
OPEN COST ESTIMATOR →Nearest EPA particle monitor: 27 km
Largest air release: Pike Industries Inc. - Williston VT (P800), 346 Avenue A (petroleum), 0.3 km outside the city limits, 3.3 lb in 2024.
Violating a South Burlington water conservation notice or order is a violation of the city's water rules; such orders can follow a finding by the city, the water district or the state health department of a threat to the supply's potability or sufficiency.
South Burlington Code §38-185: water conservation · checked September 2026
South Burlington's stormwater ordinance lists the only things that may go into the public stormwater system, from storm water itself to lawn watering and uncontaminated groundwater, and makes it a violation for anyone to cause or allow any other, illicit discharge into it, which leaves detergent rinse water from a wash job on the wrong side of the line.
South Burlington Code Sec. 38-432: use of the public stormwater system · checked September 2026
Late-winter and early-spring ice-melt residue carries chloride-residue, mineral residue, and organic residue composite. Ice-dam meltwater residue from roof-edge ice damming produces a distinctive composite residue on upper-pane and sash-perimeter glass. Percarbonate-citric ladder protocol required on the worst-affected stock. Same handling pattern Linnea Jorgensen documents for Minnesota.
Deciduous tree-pollen wave dominant statewide. Lower density than Southern pine-pollen wave. Wet-rinse handling. No scraping, no dry-brushing.
Sugar-house steam emissions during the boiling season produce a distinctive sticky organic residue on glass — sugar-and-mineral composite. Heavier on sugar-house-adjacent residential and commercial. Operationally distinctive Vermont contaminant. Extended alkaline-soap dwell plus light citric finish. Operator local-knowledge handling required.
The district gives its water as 3.6 grains per gallon, about 60 mg/L — soft — meaning the coatings on this city's newer glazing matter far more than its mineral content.
Residential window cleaning in South Burlington typically runs $9–13 per pane or $250–410 for a standard single-story exterior. Reach decides the number in South Burlington — curtain wall and tall gable lights are quoted on access, not pane count.
South Burlington's drier, frost-free months are June and August and September, by NOAA's 1991–2020 normals for the Burlington International Airport station, where July brings the most rain. The calendar on this page marks June (after the May 15 bloom and after smoke season). Frost nights usually run from October 15 to April 29.
Usually yes: Champlain Water District publishes hardness of 60 mg/L, low enough that tap-rinsed glass tends to dry clean. Iron, manganese, sodium and chloride all sit under this site's flags (highest: chloride up to 19 mg/L). It draws on Shelburne Bay on Lake Champlain, drawn from a deep-water intake offshore.
In South Burlington the dominant residue patterns include new england pollen wave and lake-effect humidity. Airport-adjacent glass here carries combustion film that needs detergent on a set cycle rather than seasonal timing.
There is more low-E coated and curtain-wall glazing here than anywhere else in Vermont, and the wrong chemical ruins it permanently.
Just over the Vermont line